Flexible multi-channel amplifiers via wavefront muxing techniques

A power amplification system comprising:

• a first wavefront multiplexer receiving concurrently M1 first input signals, M1 being an integer greater than 2, performing a first wavefront multiplexing transform on the M1 first input signals by attaching M1 first wavefronts to the M1 first input signals respectively, and generating concurrently M1 first intermediate signals, each of the M1 wavefronts having M1 coefficients, the M1 first wavefronts being unique and mutually orthogonal, the first wavefront multiplexing transform having an inverse;
• a second wavefront multiplexer receiving concurrently M2 second input signals, M2 being an integer greater than 2, performing a second wavefront multiplexing transform on the M2 second input signals by attaching M2 second wavefronts to the M2 second input signals respectively, and generating concurrently M2 second intermediate signals, each of the M2 second wavefronts having M2 coefficients, the M2 wavefronts being unique and mutually orthogonal, the second wavefront multiplexing transform having an inverse;
• at least first and second power amplification modules coupled to the first and second wavefront multiplexers, the at least first power amplification module receiving a first subset of the M1 first intermediate signals and a second subset of the M2 second intermediate signals, the at least second power amplification module receiving a third subset of the M1 first intermediate signals and a fourth subset of the M2 second intermediate signals, the first, second, third, and fourth subsets having distinct intermediate signals, the at least first and second power amplification modules outputting in total M1+M2 first output signals;
• and
• a first wavefront demultiplexer receiving concurrently M1 first output signals of the M1+M2 first output signals, performing the inverse of the first wavefront multiplexing transform on the M1 first output signals and generating concurrently M1 second output signals, the M1 second output signals corresponding respectively to the M1 first input signals in an order of correspondence, each of the M1 second output signals being an amplified version of a corresponding one of the M1 first input signals;
• and
• a second wavefront demultiplexer receiving concurrently remaining M2 first output signals of the M1+M2 first output signals, performing the inverse of the second wavefront multiplexing transform on the M2 first output signals and generating concurrently M2 second output signals, the M2 second output signals corresponding respectively to the M2 second input signals in an order of correspondence, each of the M2 second output signals being an amplified version of a corresponding one of the M2 second input signals.